Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the anti-lock brake system (ABS) module	Smart junction box (SJB) fuse 19 (10A) Circuitry ABS module	GO to PINPOINT TEST A .
No communication with the instrument cluster	Circuitry. Instrument cluster.	REFER to INSTRUMENT CLUSTER to continue diagnosis of the instrument cluster.
The red brake warning indicator does not self-check	Instrument cluster	REFER to INSTRUMENT CLUSTER .
The red brake warning indicator stays on when the ignition switch is in RUN	Circuitry Low brake fluid warning switch Parking brake switch Instrument cluster	REFER to INSTRUMENT CLUSTER .
The yellow anti-lock brake system (ABS) warning indicator is always on	Circuitry Instrument cluster ABS module	GO to PINPOINT TEST H .
Spongy brake pedal with no warning indicator	Air in the brake hydraulic system	GO to PINPOINT TEST I .
Poor vehicle tracking during anti-lock function	Air in the hydraulic brake system Hydraulic control unit (HCU)	GO to PINPOINT TEST J .
	Base brake system	REFER to BRAKE SYSTEM-GENERAL INFORMATION .
The traction control is inoperative	Anti-lock brake system (ABS) module	INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE .
The traction control system cannot be disabled	Circuitry Traction control switch Instrument cluster	GO to PINPOINT TEST K .
The traction control switch indicator is never/always on	Circuitry Traction control switch Instrument cluster	GO to PINPOINT TEST L .